International Centre of Excellence for Malaria Research(ICEMR) Program
Passive Case Detection
Passive case detection (PCD) in malaria research refers to the identification and diagnosis of malaria cases among individuals who present to healthcare facilities with symptoms suggestive of malaria.
Microscopy Reading
The process begins with preparing two types of blood smears: thick and thin. A thick smear uses a larger drop of blood, spread to concentrate the parasites, making them easier to detect when parasitemia (the number of parasites in the blood) is low.
Mosquito Surveillance
Mosquito surveillance is a crucial component of effective vector control and disease prevention, particularly for diseases like malaria, dengue, Zika, and chikungunya, which are transmitted by mosquitoes.
Study Background
The ICEMR project, or the International Centers of Excellence for Malaria Research, is a global network of research centers established by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH). These centers are located in malaria-endemic regions around the world and are dedicated to conducting research to understand, control, and ultimately prevent malaria. Here are some key aspects of the ICEMR project: Global Network: ICEMR is a network of independent research centers located in various regions where malaria is prevalent, including Africa, Asia, and South America. This allows for research to be conducted in diverse ecological and epidemiological settings. Multidisciplinary Approach: The ICEMR program emphasizes a multidisciplinary approach to malaria research, bringing together experts from various fields such as entomology, epidemiology, immunology, genetics, and clinical medicine. Research Focus: ICEMR centers conduct research on various aspects of malaria, including: The biology and behavior of malaria-transmitting mosquitoes The epidemiology and transmission dynamics of malaria The pathogenesis of malaria in humans The development of new tools for malaria diagnosis, treatment, and prevention Capacity Building: ICEMR also focuses on building research capacity in malaria-endemic countries by training scientists and strengthening research institutions. Collaboration: The ICEMR program encourages collaboration among researchers and institutions, both within the network and with other organizations working on malaria control. The overarching goal of the ICEMR project is to generate knowledge and develop tools that can be used to improve malaria control and ultimately eliminate the disease. By fostering research and collaboration, ICEMR plays a crucial role in the global fight against malaria.
Field Work
Passive case detection (PCD) for malaria at health centers relies on individuals presenting with symptoms suggestive of malaria, such as fever, chills, and headache. When a patient arrives at the clinic, healthcare workers take a detailed medical history and perform a physical examination. If malaria is suspected, a blood sample is collected, typically through a finger prick, for diagnostic testing. This sample is then used to prepare blood smears for microscopic examination. The thick smear is primarily used for parasite detection, while the thin smear aids in species identification and parasite quantification. These prepared and stained slides are then sent to the laboratory for microscopy reading. At the laboratory, trained microscopists carefully examine the stained blood smears under a microscope. They scan the thick smear to determine the presence or absence of malaria parasites. If parasites are detected, the thin smear is examined to identify the specific species of malaria parasite (e.g., Plasmodium falciparum, vivax, malariae, ovale). The microscopist also quantifies the number of parasites present in the blood, which helps determine the severity of the infection. This information is crucial for guiding appropriate treatment and monitoring the patient's response to therapy. Meanwhile, in the field, mosquito surveillance activities are ongoing. Various methods, such as larval dipping, mosquito trapping (light traps, CO2 traps, ovitraps), and resting box collections, are employed to collect mosquito samples. These samples are then brought back to the lab for identification, insecticide resistance testing, and other entomological studies to inform vector control strategies and prevent future malaria transmission.
